What are the factors that have contributed the most to the growth of the field of trade as well as its intensification currently?

Gathering foreign products has never been so easily available. In fact, even though we might be unaware of it, we are provided with an opportunity to purchase only products made by producers from abroad, starting from food and finishing on clothes. It is indicated by the fact that we live in such era, where the rivalry on different markets has become almost global.
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